Lock.



WITNESSES No. 885,558. PATENTED APR. 21, 1908.

W. W. WINSLOW. LOCK.

APPLICATION FILED JULY 6, 1907.

NVE NT OR my application UNITED STATES PATENT OFFICE.

WALTER W. WINSLOW, OF LAREDO, TEXAS.

LO OK.

Original application filed April 22, 1907, Serial No. 369,644. Dividedand this application filed July 6,

Specification of Letters Patent.

Patented April 21, 1963.

Serial No. 382,474.

To all whom it mag concern:

Be it known that I, WALTER W. WnvsLow, a citizen of the United States,rcsiding'at Laredo, in the county.of Webb and State of Texas, haveinvented a new and useful Lock, of which the following is aspecification.

This invention has reference to improvements in looks, and its object isto provide a lock which when one of the knobs is turned will give analarm, whether on the turning of the knob the lock-bolt be thrown orremain inactive.

The present invention relates more particularly to the alarm mechanism,while the means whereby the lock-bolt may be thrown or not, as desired,is shown and described in k No. 369,644, filed A ril '22, 1907, forlooks, of which application t 118 case is a division.

The present invention comprises an alarm mechanism arranged in constantcommunica tion with one of the door knobs, which will be the knobsituated exterior to the compartmept the door of which is controlled bythe loc Since the alarm mechanism is designed to have the function of anor liuary door-bell as well as to give notice of surreptitious attemptstoenter the com artment controlled by the look, there is alfso providedmeans whereby the knob controlling the alarm may be disconnected from orconnected to the lock-bolt-operating structures at the will of theoccupant of the compartment.

The invention will be fully understood fromthe following detaileddescription, taken in connection with the accompanying drawings formingpart of this specification, in which,

Figure 1 is a cross section through the lock and a ortion of a door towhich it is applied,

)arts icing-shown in elevation; ig. 2 face view of the lock; Fig. 3 is adetail view showing the manner of connecting the outer knob to theringing mechanism; and Fig. 4 is a cross section of the means forcoupling the outsideknobtothc lock-bolt-opcrating mechanism.

Referring to the drawings, there is shown the casing l of a lock adaptedto be attached to the face of a door. ()n the exposed face of this lockis secured a bell 2 which may be of any ordinary or approved type andmaybe provided with any desired style of rmgmg mechanism capable. ofbeing set in operation by rotary movement imparted thereto. There beinmany types of such bells on the market, adapted for usein the structuresembraced by this invention, it is not deemed necessary to show theinternal construction of such a bell.

Extending through the casing from the bell structure is a shaft 3carrying on the inner face of the casing a inion 4 seated in acountersunk portion 5 of the door 6, and mesh-in with this pinion is agear wheel 7 also seated in a countersunk portion 8 of the door 6.

The gear wheel 7 is mounted upon the spindle 9 of a knob 10. Thisspindle carries a collar 11 seated in a recess 12 concentric with thecountersnnkportion 8 in the door, while the shank 13 of the knob 10bears against a facelate 14 on the outside of the door. The col ar 11 isadjustably secured to the knob spindle by a set-screw 15, so that thestructure may be ada ted to doors of different thickness, and the mob 10of this spindle 9 will be confined by the engagement of the collar 11with the bottom of the recess 12 and the engagement of the shank 13 withthe face plate 14.

The spindle 9, after passing through the gear wheel 7, is rounded, asindicated at 16,

and near its end is provided with a through slot 17. The rounded portion16 of this spindle enters the shank 18 of a knob 19.

The shank 18 carries a roll-back 20 by means of which the bolt is thrownon the turning of the knob 19, but since the latch structure is initself not included in the present case but is fully described andclaimed in the aforesaid application of which this is a division, nofurther description of such latch structure is here given.

The knob shank 18 carries a pin 21 having an exterior handle andextending to the interior of the shank where it enters the slot 17 inthe end of the knob spindle 9. This 'pin is held in place by means of acli sprin 22 emstructure to take any precaution, and would there is thenno connection between the latch-operating mechanism and the knob 10,which is located exterior to the compartment controlled by the door 6.But the bell 2 being connected through the shaft 3 and pinion 4 with thegear 7, and, therefore, constantly under the control of the knob 10,will I be operated and the bell will give an alarm every time the knob10 is turned. This will a prise the occupant of the room of the fact tiat some person is turning the knob 10;

then, by the occupant manipulating the knob l 19, the door may beopened. The bell thus performs the ordinary functions of a door- 1 elland may likewise serve as an alarm. I When the pin 21 is so located asto engage l in the slot 17 the outer knob 10 is then] coupled up to thelatch mechanism, so that I the latch 15 under the control of said outerknob. But even under these conditions-the bell is still active andanyone desiring to enter the compartment will, upon manipulating theknob 10; cause the bell to ring, thus giving notice to. the occupant ofthe room that the knob is being turned and the latch is being thrown torelease the door.

Since there is nothing in the appearance of the exterior knob toindicate that there is an alarm mechanism connected therewith, a personattempting to surreptitiously gain access to the com artment through thedoor would not be le by the appearance of the nection with the bell toring the same whenever the knob is manipulated, another knob in constantconnection with the latch bolt of the lock to operate the same wheneverthe last-named knob is manipulated, and means for connecting thefirst-named knob to the second-named knob to operate the latch bolt andbell simultaneously when either knob is manipulated.

2. Alock comprisinga'suitable lock casing, a bell carried thereby, aknob in constant 0 erative relation to the latch-bolt of the lock,another. knob, a knob. spindle fast to the last-named knob and extendinginto the shank of the first-named knob, means for coupling and uncouling said knobs through the spindle carrier by the second-named knob, agear wheel on said spindle, and gear connections from said gear wheel tothe bell.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.

WALTER W. WINSLOW. Witnesses:

H. I. MORRIS, AARON JoHNsoN.

